avr32: Add MIMC200 board support (5b50c166) · Commits · e / devices / android_kernel_xiaomi_markw

arch/avr32/Kconfig

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		@@ -123,6 +123,10 @@ config BOARD_ATNGW100
		config BOARD_FAVR_32
		bool "Favr-32 LCD-board"
		select CPU_AT32AP7000

		config BOARD_MIMC200
		bool "MIMC200 CPU board"
		select CPU_AT32AP7000
		endchoice

		source "arch/avr32/boards/atstk1000/Kconfig"

arch/avr32/Makefile

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		@@ -34,6 +34,7 @@ core-y += $(machdirs)
		core-$(CONFIG_BOARD_ATSTK1000) += arch/avr32/boards/atstk1000/
		core-$(CONFIG_BOARD_ATNGW100) += arch/avr32/boards/atngw100/
		core-$(CONFIG_BOARD_FAVR_32) += arch/avr32/boards/favr-32/
		core-$(CONFIG_BOARD_MIMC200) += arch/avr32/boards/mimc200/
		core-$(CONFIG_LOADER_U_BOOT) += arch/avr32/boot/u-boot/
		core-y += arch/avr32/kernel/
		core-y += arch/avr32/mm/

arch/avr32/boards/mimc200/Makefile

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		obj-y += setup.o flash.o fram.o

arch/avr32/boards/mimc200/flash.c

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		/*
		* MIMC200 board-specific flash initialization
		*
		* Copyright (C) 2008 Mercury IMC Ltd
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 as
		* published by the Free Software Foundation.
		*/
		#include <linux/init.h>
		#include <linux/platform_device.h>
		#include <linux/mtd/mtd.h>
		#include <linux/mtd/partitions.h>
		#include <linux/mtd/physmap.h>

		#include <mach/smc.h>

		static struct smc_timing flash_timing __initdata = {
		.ncs_read_setup = 0,
		.nrd_setup = 15,
		.ncs_write_setup = 0,
		.nwe_setup = 0,

		.ncs_read_pulse = 115,
		.nrd_pulse = 110,
		.ncs_write_pulse = 60,
		.nwe_pulse = 60,

		.read_cycle = 115,
		.write_cycle = 100,
		};

		static struct smc_config flash_config __initdata = {
		.bus_width = 2,
		.nrd_controlled = 1,
		.nwe_controlled = 1,
		.byte_write = 1,
		};

		/* system flash definition */

		static struct mtd_partition flash_parts_system[] = {
		{
		.name = "u-boot",
		.offset = 0x00000000,
		.size = 0x00020000, /* 128 KiB */
		.mask_flags = MTD_WRITEABLE,
		},
		{
		.name = "root",
		.offset = 0x00020000,
		.size = 0x007c0000,
		},
		{
		.name = "splash",
		.offset = 0x007e0000,
		.size = 0x00010000, /* 64KiB */
		},
		{
		.name = "env",
		.offset = 0x007f0000,
		.size = 0x00010000,
		.mask_flags = MTD_WRITEABLE,
		},
		};

		static struct physmap_flash_data flash_system = {
		.width = 2,
		.nr_parts = ARRAY_SIZE(flash_parts_system),
		.parts = flash_parts_system,
		};

		static struct resource flash_resource_system = {
		.start = 0x00000000,
		.end = 0x007fffff,
		.flags = IORESOURCE_MEM,
		};

		static struct platform_device flash_device_system = {
		.name = "physmap-flash",
		.id = 0,
		.resource = &flash_resource_system,
		.num_resources = 1,
		.dev = {
		.platform_data = &flash_system,
		},
		};

		/* data flash definition */

		static struct mtd_partition flash_parts_data[] = {
		{
		.name = "data",
		.offset = 0x00000000,
		.size = 0x00800000,
		},
		};

		static struct physmap_flash_data flash_data = {
		.width = 2,
		.nr_parts = ARRAY_SIZE(flash_parts_data),
		.parts = flash_parts_data,
		};

		static struct resource flash_resource_data = {
		.start = 0x08000000,
		.end = 0x087fffff,
		.flags = IORESOURCE_MEM,
		};

		static struct platform_device flash_device_data = {
		.name = "physmap-flash",
		.id = 1,
		.resource = &flash_resource_data,
		.num_resources = 1,
		.dev = {
		.platform_data = &flash_data,
		},
		};

		/* This needs to be called after the SMC has been initialized */
		static int __init mimc200_flash_init(void)
		{
		int ret;

		smc_set_timing(&flash_config, &flash_timing);
		ret = smc_set_configuration(0, &flash_config);
		if (ret < 0) {
		printk(KERN_ERR "mimc200: failed to set 'System' NOR flash timing\n");
		return ret;
		}
		ret = smc_set_configuration(1, &flash_config);
		if (ret < 0) {
		printk(KERN_ERR "mimc200: failed to set 'Data' NOR flash timing\n");
		return ret;
		}

		platform_device_register(&flash_device_system);
		platform_device_register(&flash_device_data);

		return 0;
		}
		device_initcall(mimc200_flash_init);

arch/avr32/boards/mimc200/fram.c

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		/*
		* FRAM driver for MIMC200 board
		*
		* Copyright 2008 Mark Jackson <mpfj@mimc.co.uk>
		*
		* This module adds very simply support for the system's FRAM device.
		* At the moment, this is hard-coded to the MIMC200 platform, and only
		* supports mmap().
		*/

		#define FRAM_VERSION "1.0"

		#include <linux/miscdevice.h>
		#include <linux/proc_fs.h>
		#include <linux/mm.h>
		#include <linux/io.h>

		#define FRAM_BASE 0xac000000
		#define FRAM_SIZE 0x20000

		/*
		* The are the file operation function for user access to /dev/fram
		*/

		static int fram_mmap(struct file filp, struct vm_area_struct vma)
		{
		int ret;

		ret = remap_pfn_range(vma,
		vma->vm_start,
		virt_to_phys((void *)((unsigned long)FRAM_BASE)) >> PAGE_SHIFT,
		vma->vm_end-vma->vm_start,
		PAGE_SHARED);

		if (ret != 0)
		return -EAGAIN;

		return 0;
		}

		static const struct file_operations fram_fops = {
		.owner = THIS_MODULE,
		.mmap = fram_mmap,
		};

		#define FRAM_MINOR 0

		static struct miscdevice fram_dev = {
		FRAM_MINOR,
		"fram",
		&fram_fops
		};

		static int __init
		fram_init(void)
		{
		int ret;

		ret = misc_register(&fram_dev);
		if (ret) {
		printk(KERN_ERR "fram: can't misc_register on minor=%d\n",
		FRAM_MINOR);
		return ret;
		}
		printk(KERN_INFO "FRAM memory driver v" FRAM_VERSION "\n");
		return 0;
		}

		static void __exit
		fram_cleanup_module(void)
		{
		misc_deregister(&fram_dev);
		}

		module_init(fram_init);
		module_exit(fram_cleanup_module);

		MODULE_LICENSE("GPL");

		MODULE_ALIAS_MISCDEV(FRAM_MINOR);